Least count (LC) of screw gauge $= \frac{\text{Pitch}}{\text{Number of divisions on circular scale}} = \frac{1 \, mm}{100} = 0.01 \, mm$
Main scale reading (MSR) = 1 mm
Circular scale reading (CSR) = 63 divisions
Final reading = MSR + CSR $\times$ LC = $1 \, mm + 63(0.01 \, mm) = 1.63 \, mm = 0.163 \, cm$
Match the LIST-I with LIST-II
LIST-I | LIST-II | ||
---|---|---|---|
A. | Boltzmann constant | I. | \( \text{ML}^2\text{T}^{-1} \) |
B. | Coefficient of viscosity | II. | \( \text{MLT}^{-3}\text{K}^{-1} \) |
C. | Planck's constant | III. | \( \text{ML}^2\text{T}^{-2}\text{K}^{-1} \) |
D. | Thermal conductivity | IV. | \( \text{ML}^{-1}\text{T}^{-1} \) |
Choose the correct answer from the options given below :
Mass = \( (28 \pm 0.01) \, \text{g} \), Volume = \( (5 \pm 0.1) \, \text{cm}^3 \). What is the percentage error in density?
List I | List II | ||
---|---|---|---|
A | Mesozoic Era | I | Lower invertebrates |
B | Proterozoic Era | II | Fish & Amphibia |
C | Cenozoic Era | III | Birds & Reptiles |
D | Paleozoic Era | IV | Mammals |